Deku Nuts

Increased Deku Nuts 1:


Go R,L,R,L,F,L in the Lost Woods and bomb the rock there. Fall down and beat the first shrub guy and pay him 40 rupees to get the upgrade to 30 Deku Nut capacity.

Increased Deku Nuts 2:


Go R,L,R,L,L in the Lost Woods and fall down the hole in the grass near the butterflies. Wear the Mask of Truth and be judged. The shrubs will decide that you are ugly but give you the Deku Nut upgrade to 40 Deku Nuts anyway. There is a bug in the game that makes it so you can't get this after a certain point (which isn't yet known, but believed to be once you first become adult Link). So you want to do it the second you get the Mask of Truth, and thus want to get the Mask of Truth as soon as you can (immediately after getting the Ocarina of Time).